As we all know, lead-acid batteries have always been the main source of power for electric vehicles and are a core component of electric vehicles. However, as the country\'s emphasis on the environment has gradually increased, the shortcomings of lead-acid batteries have gradually emerged. The so-called hero of the times, the \"lithium battery\" came into being, and its small size, light weight, environmental protection and other high-quality features have recently become a key national support project.

At present, China has set a special frequency range for different types of radio transmission equipment, and not all frequencies can be legally used in China. In other words, all radio transmission equipment sold or used in its territory will specify different frequencies.

The basic process of toy CCC certification and its required materials and introduction of six categories of toy products related to CCC certification.

Socket CCC testing standard GB2099.1-1996 \"Plugs and sockets for household and similar purposes Part 1: General requirements\" GB2099.2-1997 \"Plugs and sockets for household and similar purposes Part 2: Special requirements for appliance sockets\" GB1002-1996 \"Types, basic parameters and dimensions of single-phase plugs inserted into sockets for household and similar purposes\" GB1003-1999 \"Types, basic parameters and dimensions of three-phase plugs and sockets for household and similar purposes\"

With the continuous improvement of domestic living standards in China, the floor-sweeping robots that have been sold in the European and American markets have entered the homes of ordinary people and are accepted by more and more people. However, ordinary consumers are paying more and more attention to the safety and quality of sweeping robots. Sweeping robots must pass the test and certification of relevant national authorities before they can enter the market.

The multimedia all-in-one machine integrates infrared touch technology, intelligent office software, multimedia network communication technology, high-definition flat-panel display technology and other technologies into one, integrating a projector, electronic whiteboard, computer (optional), TV, touch function, etc. Multi-functional interactive devices with multiple devices in one, which upgrade the traditional display terminal into a full-featured human-machine interactive device.

With the change in the level and methods of government affairs, more and more law enforcement recorders are used in the daily law enforcement office process. Law enforcement personnel must be equipped with law enforcement recorders for law enforcement. Law enforcement recorders can protect the personal rights and interests of law enforcement personnel and law enforcement personnel.

China Model Approval is abbreviated as SRRC certification, which is a national compulsory certification, which aims to distinguish the civilian band from the military band in the wireless band. It is the technical management of the technical parameters of the spectrum parameters before the radio transmission equipment is put into use in the development, production, import and purchase.